Spec. Difference
About Resolution (D1, 4CIF, 2CIF, DCIF, CIF, QCIF)
D1, So-called "full resolution" for TV specs. Normally D1 can mean one of the following video resolutions:About Resolution (D1, 4CIF, 2CIF, DCIF, CIF, QCIF)
- 704x576 (TV PAL)
- 704x480 (TV NTSC)
- 720x576 (DVD-Video PAL)
- 720x480 (DVD-Video NTSC)
4CIF (4 Common Intermediate Format)
- 704x576 in PAL
- 704x480 in NTSC
2CIF (2 Common Intermediate Format)
- 704x288 in PAL
- 704x240 in NTSC
DCIF (Double Common Intermediate Format)
Compared DCIF with CIF and 2CIF: under the same bit rate, the image quality and definition is greatly improved.
- 528x384 in PAL
- 528x320 in NTSC
CIF (Common Intermediate Format)
Back in history, this acronym's name comes from video conferencing tools in late 1980's and early 1990's. Nowadays the term CIF is used to mean specific video resolution:
- 352x288 in PAL
- 352x240 in NTSC
CIF is 1/4th of "full resolution" TV, also called as D1 and is best-known because VideoCD standard uses this resolution.
QCIF (Quarter Common Intermediate Format)
Old video resolution name. 1/4 of CIF video resolution. Standard sizes :
- 176x144 in PAL
- 176x120 in NTSC
About Stream (CBR, VBR, ABR)
CBR(Constant Bit Rate)固定位元率
檔案從頭到尾都是一種位元率,固定有部份音質損失與空間浪費。
壓縮出來的檔案體積較大,為最早的MP3壓縮格式。
VBR(Variable Bit Rate)動態位元率
沒有固定的位元率,在壓縮時根據音頻數據即時分析位元率,以音質為前提並兼顧檔案大小的方式,但檔案大小會隨音樂而有所變化。
ABR(Average Bit Rate)平均位元率
針對CBR不佳的檔案體積比和VBR生成檔案大小不定的特點獨創了這種編碼模式。
ABR在指定的檔案大小內,以每50幀(30幀約1秒)為一段,低頻和不敏感頻率使用相對低的位元率,高頻和大動態表現時使用相對高的位元率,可以做為VBR和CBR的一種折衷選擇。
NTSC & PAL
NTSC規格:
垂直同步信號:60 HZ﹒
水準同步信號:15750 HZ﹒
圖場(field)掃描頻率:60 per sec﹒
圖框(frame)掃描頻率:30 per sec,每一圖框包含2圖場﹒
圖場(fiele)掃描時間:1/60 per sec﹒
圖框(frame)掃描時間:1/30 per sec﹒
圖場(field)解析度:262.5
圖框(frame)解析度:525
每秒水準掃描速率:525 ×30=15750
水準掃描速率每單位元元時間:1/15750 sec﹒
PAL 規格
垂直同步信號:50 HZ﹒
水準同步信號:15625 HZ﹒
圖場(field)掃描頻率:50 per sec﹒
圖框(frame)掃描頻率:25 per sec,每一圖框包含2圖場﹒
圖場(fiele)掃描時間:1/50 per sec﹒
圖框(frame)掃描時間:1/25 per sec﹒
圖場(field)解析度:312.5
圖框(frame)解析度:625
每秒水準掃描速率:625 ×25=15625
水準掃描速率每單位元元時間:1/15625 sec﹒
Camera (420, 480, 520 or above lines)
最大分別在於價格上, 一搬TV 或 VHS 只要有 380 lines 便足夠有餘, 一只 VCD 標準是 240 lines, 一只 DVD 可高達 720 lines, Camera 來說 420 line 是標準, 480 line 可更清晰, 520 line 是現有 CCTV 最大的線數!
Estimate Recording Storage
- Resolution : D1 [ 704x576 ]
- FPS : 25
- Bit Rate : VBR
- Quanlity : High
- Storage for Recording
- 600 ~ 700MB per hour/cam
- 14 ~ 15GB per day/cam
Default Port for NetDVR Model PLC or FLK (For Router/Firewall Configure Port Forwarding)
- HTTP WebGui Port : 80
- Media Port : 34567
- Mobile Stream Port : 34599
- RTSP Port : 554
Download Resources
Download Resources
CMS H.264 DVR Management Tools (v3.0.9.7.T)
<CMS is use for Control, Monitoring and Recording from Remote, if you don't want to using Internet Explorer, because many reason will cause you can't view on IE>
IE ActiveX Plug-ins (v2.0.0.78)
Disk Player (v1.2.0.0)
Player (v1.6.0.0.R)
[iOS] vMEyeCloud (v1.0.0 build 20121012)
[iOS] vMEyeCloud HD (v1.0.0 Test Build 20120914)
- How to configure vMEye
[Andriod] vMEyeCloud (v1.0.8)
[Andriod] vMEyeSuper (v1.1.1)
[Andriod] vMEyev2 (v3.0.2)
NetDVR Information
- FLK-6004E (4 Channel DVR)
- PLC-3004T-S (4 Channel DVR)
<CMS is use for Control, Monitoring and Recording from Remote, if you don't want to using Internet Explorer, because many reason will cause you can't view on IE>
IE ActiveX Plug-ins (v2.0.0.78)
Disk Player (v1.2.0.0)
Player (v1.6.0.0.R)
[iOS] vMEyeCloud (v1.0.0 build 20121012)
[iOS] vMEyeCloud HD (v1.0.0 Test Build 20120914)
- How to configure vMEye
[Andriod] vMEyeCloud (v1.0.8)
[Andriod] vMEyeSuper (v1.1.1)
[Andriod] vMEyev2 (v3.0.2)
NetDVR Information
- FLK-6004E (4 Channel DVR)
- PLC-3004T-S (4 Channel DVR)
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